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Quick Overview
- 150mm aperture, 600mm focal length
- Fast f/4 focal ratio
- Parabolic borosilicate mirrors utilizing Sky-Watcher’s proprietary Radiant ™ Aluminum Quartz (RAQ™) coatings designed for imaging with 94% reflectivity
- 11:1, dual-speed, 2-inch Crayford-style focuser
- Oversized secondary mirror produces greater illumination for full-frame DSLR and CCD cameras
- Primary and secondary mirrors are both collimatable
- Included coma corrector is designed to match the 600mm focal length, ideal for APS-C sensors and smaller
- Imaging focal ratio with included coma corrector/reducer is f/3.45, focal length is 518mm
- Includes tube rings, mounting plate, eyepiece adapters, 70° Ultra Wide 22mm eyepiece, coma corrector/reducer, and a 6×30 finderscope
Description
The Quattro imaging Newtonian is an affordable, large aperture astrograph, ideal for users searching for a fast-imaging system that will work for both astrophotography and visual astronomy. Boasting a swift f/4 focal ratio, this astrograph can produce an exposure 6x faster than the average 8-inch f/10 Schmidt Cassegrain telescope (or 8.4x faster with the included coma corrector/reducer). Although designed as an imaging optical tube, these Newtonians also produce bright and detailed viewing for visual astronomy.
Like all Sky-Watcher reflectors, the Quattro Imaging Newtonian features borosilicate mirrors coated with Sky-Watcher’s proprietary Radiant ™ Aluminum Quartz (RAQ™) coatings, producing 94% reflectivity. The tube is constructed with rolled steel, then coated with Sky-Watcher’s signature glossy metal-flake Black Diamond finish. The OTA uses an oversized secondary mirror providing greater illumination for DSLRs and CCDs using full-frame sensors, and an included coma corrector/reducer for those who want to take their imaging to the next level.
Included with the Quattro Newtonian is a 11:1 dual-speed 2-inch Crayford-style focuser, 1.25 and 2-inch eyepiece adapters, a 6×30 finderscope, tube rings, V-style dovetail plate, a 70° Ultra Wide 22mm eyepiece, and coma corrector/reducer.
Specifications
| SKU | S11205 |
| UPC | 050234112055 |
| Optical Info | |
|---|---|
| Optical Design | Newtonian |
| Mirror Coatings | Protected Aluminum coatings with 94% reflectivity |
| Glass Type | Borosilicate |
| Primary Aperture (mm) | 150mm |
| F/Ratio | 3.9 |
| Focal Length (mm) | 600 |
| Secondary Diameter | 64mm |
| Secondary Obstruction (by diameter) | 42% |
| Secondary Obstruction by Area | 18% |
| Observational Info | |
| Dawes Limit | 0.77 |
| Rayleigh Limit | 0.93 |
| Limiting Mag. | 13.36 |
| Minimum Magnification | 21x |
| Maximum Magnification | 295x |
| Light Gathering (compared to next size down) | 40% (compared to 5″ telescope) |
| General Info | |
| Focuser | 2″ Dual Speed Crayford |
| OTA Length (Retract/Ext.) | 22″ |
| OTA Outer Diameter | 7.25″ |
| OTA Weight (with accessories) | 12.6 pounds |
| Accessories | |
| Included Finder | 6×30 Finder |
| Included Diagonal | No |
| Mounting Accessories | Mounting Rings/Dovetail |
| Included Eyepieces | 22mm 70 degree 1.25″ |
| Included Case | No |
| Corrector | Yes |
Fast Shipping and Professional Packaging
Due to our longstanding partnership with UPS FedEx DHL as well as other major international carriers, we are able to provide various shipping options. Our warehouse personnel will pack each item according to our strict requirements. Before they are shipped, your goods will be thoroughly examined and secured. Everyday, we send to thousands of clients in different countries. This is a sign of our determination to become the largest online retailer globally. The warehouses and centers for distribution are in Europe, as well as the USA.
Note that orders containing more than one item will be processed according to the specific item.
Before shipping before shipping, we'll inspect thoroughly the items you've purchased. Most orders are delivered within 48 hours. The estimated delivery time is between 3 and 7 days.
Returns
The inventory is always changing and we do not fully manage it because of the fact that many parties are involved, including our warehouse and factory. Therefore, the actual inventory could change at any time. It's possible that your order will be unable to fill when you have placed the order.
Our policy is valid for 30 days. If 30 days have gone without a trace since the purchase and we are unable to offer an exchange or refund.
In order for your item to be returned it must be in its original packaging, unopened and in the same condition as when you received it in. It must also be in its original packaging.
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